Passing values between SWFs

Question

I can reach child SWF's var from parent SWF but I would like to pass parent var to child to inform and operate different things in child (depends on var, basic if condition). Is it possible to load SWF and pass a var or value with it?

private function callFile()
{
    loader = new Loader;
    loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaded);
    loader.load(new URLRequest("main.swf"));
}

private function onLoaded(e:Event)
{
    level_no = loader.content['level'];
}

This is parent->child variable read. And I want it two-way transfer.

score 4 · Accepted Answer · answered Mar 18 '15 at 15:46

To pass a parameter between a "parent" swf to its loaded "child" swf, you can use a LoaderContext object to do that like this :

loader.swf (parent) :

var context:LoaderContext = new LoaderContext();
    context.parameters = {'passed_param': 'value'};

var loader:Loader = new Loader();
    loader.load(new URLRequest('loaded.swf'), context);
    addChild(loader);

loaded.swf (child) :

trace(this.loaderInfo.parameters.passed_param); // gives : value

Hope that can help.

I am away from the file so I cannot test it but I will take your help asap. Thanks. — coner, Mar 18 '15 at 18:42

score 1 · Answer 2 · answered Mar 18 '15 at 13:05

1

In the child SWF instead of loader.content['level']; use loaderInfo.loader.loaderInfo.content['myVar'];. myVar is an variable defined in the parent SWF.

answered Mar 18 '15 at 13:05

Daniil Subbotin

6,138
5
20
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Little confusion here. -Does this mean that method also works child to parent? -or is using 'loaderInfo.loader.loaderInfo.content' better? – coner Mar 18 '15 at 13:11
1

Use `loaderInfo.loader.loaderInfo.content` to pass variable from child to parent. Use `loader.content['level'];` to pass variable from parent to child. You can't use `loader.content['level'];` to pass variable from child to parent because you don't have `loader` in the child. – Daniil Subbotin Mar 18 '15 at 13:25
Oh, gotcha. It is great to hear the basic logic works both ways. Thanks for the answer. – coner Mar 18 '15 at 13:28

score 1 · Answer 3 · answered Mar 18 '15 at 15:21

Any public defined method or variable in the swf can be called or accessed. If you define a method named doSomething in your swf then you can do:

MovieClip(loader.content).doSomething(myParentVariable);
//or
var level:int = MovieClip(loader.content).level;

score 0 · Answer 4 · answered Mar 18 '15 at 12:28

0

You can just use the query parameter to load your swf :

loader.load(new URLRequest("main.swf?var=17&var2=lol"));

Then, in your child swf, use :

stage.root.loaderInfo.parameters.var
stage.root.loaderInfo.parameters.var2

It will do the job.

answered Mar 18 '15 at 12:28

blue112

52,634
3
45
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It throws unhandled IOError (#2044) and URL not found (#2035). The path is correct but... – coner Mar 18 '15 at 12:50

Passing values between SWFs

4 Answers4

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